Requirements For North America; General Certification In North America; Product Certification Marks - ABB MS116 Manual

7. Requirements for North America

Electrical machines or electrical plants in the US must be reviewed before being commissioned by an inspector from
the relevant AHJ (Authority Having Jurisdiction). Basis for the decrease are the NEC (National Electrical Code, also
called NFPA 70), the respective application-specific guidelines, such as The NFPA 79, as well as local standards or
specifications.
Operators who do not have their machines or equipment AHJ checked risk losing their insurance protection and
damaging the energy supply. For successful on-site inspections, it is important to carry out the project planning ac-
cording to the required regulations.

7.1 General certification in North America

For electrical products to be legally installed in the United States, the Occupational Safety and Health Administration
(OSHA) lawfully require these devices to be certified through a Nationally Recognized Test Laboratory (NRTL). An
NRTL holds the responsibility for properly certifying manufactures' products to the appropriate product safety
standards. The OSHA currently recognizes 15 organizations as NRTLs, most notably including:
−
Underwriters Laboratories, Inc.
−
Canadian Standards Association
−
Intertek Testing Services NA, Inc.
Each product certified by an NRTL is given a unique certification mark to indicate conformity, which becomes a clear
sign to inspectors that the product can be legally and safely accepted.
Accreditation in Canada is performed by the Standards Council of Canada (SCC).

7.1.1 Product certification marks

Each NRTL product mark is unique, and differs depending on whether the product has been certified for use in North
America, Canada, or both. This is typically indicated by the inclusion of the letters "C" or "US" in the mark. Below are
several examples.
Nationally Recognized Test
Laboratory
Underwriters Laboratories,
Inc.
Canadian Standards Asso-
ciation
Products are marked to differentiate between whether they are "Listed" devices, indicating that they meet all of the
requirements outlined in the respective product standards, or "Recognized" devices, which meet only some of the
requirements of their standard. Recognized components are subject to additional "Conditions of Acceptability"
which can be somewhat limiting in regard to their use in electrical installations.
ABB manual motor starters are Listed products bearing a cULus mark.
APR I L 19
MA N UA L MOTOR START ER G UI D E
Certified for use in the
United States
Listed Recognized
Table 18: Product certification marks
Certified for use in
Canada
Listed Recognized
Certified for use in both
the U.S. and Canada
Listed Recognized
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